From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Anithra P Janakiraman <anithra@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, dave@linux.vnet.ibm.com,
xiyou.wangcong@gmail.com, sugaken.r3@gmail.com,
akpm@linux-foundation.org, vatsa@linux.vnet.ibm.com,
ananth@in.ibm.com
Subject: Re: [RESEND] [PATCH] Softdog enhancement to optionally invoke panic instead of reboot on timer expiry
Date: Mon, 28 Mar 2011 16:16:22 +0100 [thread overview]
Message-ID: <20110328161622.100e3a51@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20110328203502.5d62fea4@linux.vnet.ibm.com>
On Mon, 28 Mar 2011 20:35:02 +0530
Anithra P Janakiraman <anithra@linux.vnet.ibm.com> wrote:
> Hi,
>
> The patch is needed for determining the reason for failure when a
> softdog timeout occurs. We use softdog to watch for critical
> application failures and at the minimum a snapshot of the system would
> help to determine the cause. In such a scenario the application could
> fail but there isn't a softlockup as such, hence the detect softlockup
> feature does not help. The patch below adds a module parameter
> soft_panic which when set to 1 causes softdog to invoke panic instead
> of reboot when the softdog timer expires. By invoking panic we execute
> kdump if it is configured and the vmcore generated by kdump should
> provide atleast a minimal idea of the reason for failure.
Looks sensible to me.
Acked-by: Alan Cox <alan@linux.intel.com>
Alan
prev parent reply other threads:[~2011-03-28 15:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-28 15:05 Anithra P Janakiraman
2011-03-28 15:16 ` Alan Cox [this message]
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